My new DIY, should I stick with it?
http://208.37.29.55/~Arthur/pub/IMG0161.jpg
I replaced the original heatsink with a PCCooler Zalman GPU heatsink Clone.
The NB temperature increased by 4'C after replacing the heatsink, in return the Fan mounted on Floppy slot RPM dropped from 3500RPM down to 1200RPM
Old setup: Stock DFI Heatsink (0RPM), Stock AMD Heatsink (0RPM), 3500RPM 6cm Intel Fan creating a wind tunnel between the GPU and CPU, cooling CPU, NB, GPU altogether quite happily. The drawback is that 3500RPM produces quite a noise.
New setup: Zalman GPU HS Clone (0RPM), Stock AMD Heatsink (1500RPM), 3500RPM 6cm Intel Fan (at 1300rpm). The 6cm fan now doesn't provide enough wind due to 1/3 RPM. So now my CPU, NB and GPU gets a few degrees hotter. (More like 5'C for all except PWM)
One 3500RPM fan compared to two 1200~1500RPM fan, which one should I take?
P.S. Those Zalman clones are amazingly cheap. The finishing is even better than Original Zalman (But obviously the surface area is much less due to the skimmed Fins (Fin shape changed from L shape to C shape, I believe there were 40% reduction in Fins' surface area compared to original Zalman). But since these Clones are so cheap, you would't worry about bending those fins (or even cut them off)
I tried to place my 6600GT to another slot. and you can indeed run SLI with this heatsink. Good replacement for the stock DFI heatsink.